ICD-10-CM > G00-G99 > G50-G59 > G57 > G57.5 G57.5 Tarsal tunnel syndrome Non-Billable/Non-Specific Codes G57.50Tarsal tunnel syndrome, unspecified lower limbG57.51Tarsal tunnel syndrome, right lower limbG57.52Tarsal tunnel syndrome, left lower limbG57.53Tarsal tunnel syndrome, bilateral lower limbs